/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package ferramentas;

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.SQLException;
import java.text.ParseException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import pessoal.Usuario;

/**
 *
 * @author ciar
 */
public class lembrarSenha extends HttpServlet {

    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        request.setCharacterEncoding("UTF-8");
        response.setCharacterEncoding("UTF-8");
        PrintWriter out = response.getWriter();

        String cpf = request.getParameter("cpf");

        Query q = new Query();
        try {
            if (cpf.isEmpty()) {
                throw new Exception();
            }
            Usuario u = q.getUsuario(cpf);
            if (u != null) {

                Comunicacao c = new Comunicacao();

                c.enviarEmail(new String[]{u.getEmail()}, "Recuperação de Senha", "Sua senha é: " + u.getSenha(), "noreply@ciar.ufg.br");

                out.println("<script type='application/javascript' language='javascript'>");

                String emailModificado = protegeEmail(u.getEmail());
                             
                out.println("window.alert('Sua senha foi enviada para seu e-mail: " + emailModificado + "');");
                out.println("window.location ='index.jsp';");
                out.println("</script>");
            } else {
                out.println("<script type='application/javascript' language='javascript'>");
                out.println("window.alert('O CPF digitado não está cadastrado em nossos sistemas!');");
                out.println("window.location ='index.jsp';");
                out.println("</script>");
            }
        } catch (SQLException ex) {
            out.println("<script type='application/javascript' language='javascript'>");
            out.println("window.alert('CPF inexistente!');");
            out.println("window.location ='index.jsp';");
            out.println("</script>");
        } catch (Exception ex) {
            out.println("<script type='application/javascript' language='javascript'>");
            out.println("window.alert('É preciso preencher o campo CPF para solicitar senha!');");
            out.println("window.location ='index.jsp';");
            out.println("</script>");
        } finally {
            out.close();
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP
     * <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP
     * <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

    private String protegeEmail(String email) {
        int index = email.indexOf("@");
        
        String prefixoSeguro = email.substring(3, index);
        int tamPrefixoSeguro = prefixoSeguro.length();
        String asterisco = "";
        for (int i = 0; i < tamPrefixoSeguro; i++){
            asterisco += "*";
        }
        
        email = email.replaceFirst(prefixoSeguro, asterisco);
        return email;
    }
}
